It's hard to forget where you were if you tuned in on that fateful night in September 2000. Spears took the stage at the MTV VMAs in nothing more than a nude sequined bodysuit and performed "Oops . . . I Did It Again," and the rest is history.
What to wear: A flesh-colored bra and pants, strategically covered in crystals, with silver heels. Make sure your hair is perfectly tousled, and don't hesitate to wear a headset microphone.